Atmosphere

... (like nuclear fission!), they cannot be utilized by cellular metabolism. So it is possible that complex life forms could only emerge after the atmosphere contained enough oxygen. Being able to utilize oxygen gave also an enormous competitive edge because oxygen was most likely toxic to early ...

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... yet to evolve (such as enzymes for oxidative energy metabolism and many others), so there could not be advanced organisms for this long time. The atmosphere of that time could not support very complex life forms and it did not drive the evolution towards oxygen-based life, unlike the oxygen-rich ...

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so i've heard around 300 million years ago, when insects had wingspans meters long, the concentration of oxygen in the atmosphere was around 35% but I've also heard at about 25% oxygen a firestorm across continents could be ignited are these both correct and does anyone else see a ...

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... to fly onto a gene" well this one is just wrong. Neutrons cant move so freely without some kind of catastrophic effect "chemicals in the atmosphere might have fallen onto a gene" why not, sounds pretty "ok"

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... that generate new species ie a virus was blown onto a gene sun spots might have caused a lonely neutron to fly onto a gene chemicals in the atmosphere might have fallen onto a gene etc etc

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